Support timeout option for the deploy command

[aurrelhebert]

Support a timeout option for the deployed command as discussed in #309

We should first agreed on a duration format that we will support on the CLI (as seen in #609).

Timeout

First, a timeout option will be implemented.

Behavior

This option will add the following behavior:

• If deploy is OK or FAIL before the timeout set, the CLI answer success or fail
• If deploy is still in WIP when the timeout ends, the CLI answer fail

Option format

The timeout option will support value as:

• An integer or a float number value (yet to define)
• Could have an optional suffix (CLI will support m for minutes or s for seconds), by default the timeout will be in seconds

Example:

clever deploy my_app --timeout 5m
clever restart my_app --timeout 5m

# Timeout of 300 seconds
clever deploy my_app --timeout 300
clever restart my_app --timeout 20s